Question

我在PHP中创建了一个带字母过滤器的表。它没有任何问题，工作正常。但是我正在为wordpress项目开发它，所以在用PHP成功开发之后，我尝试使用$wpdb在wordpress中使用它。

我现在面临的问题是要过滤我们需要点击任何字母（假设A）并点击所有从'A＆＃39; A＆＃39;应该作为输出返回。但不是仅返回'A＆＃39; A＆＃39;条目它返回整个表。简而言之，过滤器无效。

我在wordpress的模板文件中使用此代码。

global $wpdb;
?><div class="wrap"><div class="main-top"><div class="main"><h1><div    class="titlepage"><?php the_title();?></div></h1><?php
?><form action="memberspage.php" method="POST" name='search'  onclick="submit">
<a href="?page_id=911?letter=A">A</a> |
<a href="?page_id=911?letter=B">B</a> |
<a href="?page_id=911?letter=C">C</a> |
<a href="?page_id=911?letter=D">D</a> |
<a href="?page_id=911?letter=E">E</a> |
<a href="?page_id=911?letter=F">F</a> |
<a href="?page_id=911?letter=G">G</a> |
<a href="?page_id=911?letter=H">H</a> |
<a href="?page_id=911?letter=I">I</a> |
<a href="?page_id=911?letter=J">J</a> |
<a href="?page_id=911?letter=K">K</a> |
<a href="?page_id=911?letter=L">L</a> |
<a href="?page_id=911?letter=M">M</a> |
<a href="?page_id=911?letter=N">N</a> |
<a href="?page_id=911?letter=O">O</a> |
<a href="?page_id=911?letter=P">P</a> |
<a href="?page_id=911?letter=Q">Q</a> |
<a href="?page_id=911?letter=R">R</a> |
<a href="?page_id=911?letter=S">S</a> |
<a href="?page_id=911?letter=T">T</a> |
<a href="?page_id=911?letter=U">U</a> |
<a href="?page_id=911?letter=V">V</a> |
<a href="?page_id=911?letter=W">W</a> |
<a href="?page_id=911?letter=X">X</a> |
<a href="?page_id=911?letter=Y">Y</a> |
<a href="?page_id=911?letter=Z">Z</a> |
<a href="?page_id=911">View All</a> 
</form><?php
if(isset($_GET['letter']))
{
  $char=$_GET['letter'];

  if($char)
{
$sql = $wpdb->get_results( "SELECT * FROM teacher_directory where Name LIKE     '$char%'", ARRAY_A  );
$count = $sql->num_rows;
if($count >= 1)
{
    echo "<table width='100%' border='1'>";
    echo "<tbody>";
    echo "<tr>";
    echo "<th>S. No.</th>";
    echo "<th>Name</th>";
    echo "<th>Designation</th>";
    echo "<th>Department</th>";
    echo "<th>Tele/Mob.No.</th>";
    echo "</tr>";
    foreach($sql as $row){
    echo "<tr>";
    echo "<td>" . $row['S. No.'] . "</td>";
    echo "<td>" . $row['Name'] . "</td>";
    echo "<td>" . $row['Designation'] . "</td>";
    echo "<td>" . $row['Department'] . "</td>";
    echo "<td>" . $row['Tele/Mob.No.'] . "</td>";               
    echo "</tr>";
 }
    echo "</tbody>";
    echo "</table>"; 
}}
}

更新 - ：自从我得到答案后，我正在为未来的观众展示我的最终完整代码（处于工作状态）

如果有人遇到有关按字母过滤表格的问题，那么以下代码可能会解决您的问题。它可以在模板文件中使用。

<?php
/*
Template Name: Table
*/
get_header();
?><div class="banner-box"><?php
global $wpdb;
?><div class="wrap"><div class="main-top"><div class="main"><h1><div  class="titlepage"><?php the_title();?></div></h1><div class="contcolor"><?php
?><form action="teacher.php" method="POST" name='search' onclick="submit"><a  href="?page_id=916&letter=A">A</a> |
<a href="?page_id=916&letter=B">B</a> |
<a href="?page_id=916&letter=C">C</a> |
<a href="?page_id=916&letter=D">D</a> |
<a href="?page_id=916&letter=E">E</a> |
<a href="?page_id=916&letter=F">F</a> |
<a href="?page_id=916&letter=G">G</a> |
<a href="?page_id=916&letter=H">H</a> |
<a href="?page_id=916&letter=I">I</a> |
<a href="?page_id=916&letter=J">J</a> |
<a href="?page_id=916&letter=K">K</a> |
<a href="?page_id=916&letter=L">L</a> |
<a href="?page_id=916&letter=M">M</a> |
<a href="?page_id=916&letter=N">N</a> |
<a href="?page_id=916&letter=O">O</a> |
<a href="?page_id=916&letter=P">P</a> |
<a href="?page_id=916&letter=Q">Q</a> |
<a href="?page_id=916&letter=R">R</a> |
<a href="?page_id=916&letter=S">S</a> |
<a href="?page_id=916&letter=T">T</a> |
<a href="?page_id=916&letter=U">U</a> |
<a href="?page_id=916&letter=V">V</a> |
<a href="?page_id=916&letter=W">W</a> |
<a href="?page_id=916&letter=X">X</a> |
<a href="?page_id=916&letter=Y">Y</a> |
<a href="?page_id=916&letter=Z">Z</a> |
<a href="?page_id=916">View All</a> 
</form><?php
if(isset($_GET['letter']))
{
  $char=$_GET['letter'];
  if($char)
{
$results = $wpdb->get_results( "SELECT * FROM teacher_directory where Name     LIKE '$char%'", ARRAY_A  );
$count = $results->num_rows;
?><div class="contcolor"><?php
if(!empty($results))
{   
    echo "<table width='100%' border='1' cellspacing='1'>";
    echo "<tbody>";
    echo "<tr>";
    echo "<th>S. No.</th>";
    echo "<th>Name</th>";
    echo "<th>Designation</th>";
    echo "<th>Department</th>";
    echo "<th>Tele/Mob.No.</th>";
    echo "</tr>";
    foreach($results as $row){
    echo "<tr>";
    echo "<td>" . $n +=1 . "</td>";
    echo "<td>" . $row['Salutation'].' '.$row['Name'] . "</td>";
    echo "<td>" . $row['Designation'] . "</td>";
    echo "<td>" . $row['Department'] . "</td>";
    echo "<td>" . $row['Tele/Mob.No.'] . "</td>";               
    echo "</tr>";
 }
  echo "</tbody>";
  echo "</table>"; 
}else
{
  echo "<table width='100%' border='1' cellspacing='1'><tr><td>No Records    Found</td></tr></table>";
}?></div><?php
}}

else {

       $results = $wpdb->get_results( 'SELECT * FROM teacher_directory', ARRAY_A  );
       if(!empty($results)){
       ?><div class="contcolor"><?php
        echo "<table width='100%' border='1' cellspacing='1'>";
       echo "<tbody>";
       echo "<tr>";
       echo "<th>S. No.</th>";
       echo "<th>Name</th>";
       echo "<th>Designation</th>";
       echo "<th>Department</th>";
       echo "<th>Tele/Mob.No.</th>";
       echo "</tr>";
       foreach($results as $row){
       echo "<tr>";
       echo "<td>" . $row['S. No.'] . "</td>";
       echo "<td>" . $row['Salutation'].' '.$row['Name'] . "</td>";
       echo "<td>" . $row['Designation'] . "</td>";
       echo "<td>" . $row['Department'] . "</td>";
       echo "<td>" . $row['Tele/Mob.No.'] . "</td>";               
       echo "</tr>";
 }
 echo "</tbody>";
 echo "</table>"; 
 ?></div><?php
}}
?></div></div></div></div><?php
get_footer();?></div>

Answer 1

你必须改变你的IF条件

$sql = $wpdb->get_results( "SELECT * FROM teacher_directory where Name LIKE '$char%'", ARRAY_A  );
if(!empty($sql)) { 
   /* your search result same code that you have print */ 
} else {
  /* same it is */
}

表格中的字母过滤器无效

1 个答案: